A method of producing an iron core product may include: substantially simultaneously putting resin materials into each of a plurality of first accommodating portions formed in a heating portion; substantially simultaneously initiating heating, by the heating portion, of the resin materials disposed in the first accommodating portions; and supplying a molten resin from the first accommodating portions to resin forming regions provided in a core body.

A control device for controlling an injection molding machine includes a mold device having a fixed mold and a movable mold; a mold clamping device to open and close the fixed and movable molds; and an injection device to inject a molding material into the mold device; and circuitry to acquire an allowable amount between the fixed and movable molds for preventing discharge of the injected molding material from the mold device, and acquire a gap size for discharging a gas between the fixed and movable molds, and adjust a mold clamping force of the mold clamping device such that a value obtained based on an opening size between the fixed and movable molds generated by injection of the molding material and the gap size satisfies a condition according to the allowable amount when the molding material is injected into the mold device closed by the mold clamping device.

The present invention provides a production process for a meal bowl and a meal bowl, the production process being, in sequence, a first injection molding, a first printing, a second printing, and a second injection molding, and the meal bowl obtained has upper transparent shell, pattern layer, separation layer, and soft plastic layer, and the presence of upper transparent shell eliminates the possible presence of industrial pigments, bowl bottom pattern ink or heavy metals in colored glazes, which potential harm to humans or infants, and low food safety risk.